SunTrust Banks Incorporated

Spending: How to get sweeter card rewards

If you have a checking or saving account with the bank that issues your rewards credit card, you may get a boost on cash back, points or miles.

The new PenFed Power Cash Rewards Visa Signature card (9.24 percent to 17.99 percent annual percentage rate) pays an unlimited 2 percent cash back on all spending if you have an Access America checking account with Pentagon Federal Credit Union (maintain a daily balance or monthly direct deposit of $500 or more to avoid a $10 monthly fee) or if you have served in the military. Otherwise, you'll earn 1.5 percent cash back on purchases. Anyone can join PenFed by paying a one-time, $17 membership fee to Voices for America's Troops or the...